Dustfall Adsorbing Capacity of Major Species of Greening Trees in Nanjing and Its Law

Dustfall adsorbing capacities of 26 major species of greening trees in different functional zones in Nanjing were monitored and analyzed.Results show that dustfall adsorbing capacity varied from species to species,and displayed a seasonal trend,high in spring,low in summer,high again in autumn,and highest in winter,and a decreasing order of shrubs>evergreen arbors>deciduous arbors.The amount of dustfall on the leaves increased with the time.